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. 2021 Dec 8;127(1):267–278. doi: 10.1152/jn.00108.2021

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Licensed under Creative Commons Attribution CC-BY 4.0. Published by the American Physiological Society.

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Figure 4. — Examples of cough (and respiratory) changes induced by microinjections in the pre-Bötzinger complex area. The first panel represents 2 control pre-d,l-homocysteic acid (DLH) cough trials. The second panel shows 2 cough trials during respiratory changes induced by microinjection of DLH. The third panel displays a typical cough trial in control and 6 min after bilateral microinjections of kynurenic acid (KYN). The forth panel demonstrates changes induced by bilateral microinjections of gabazine (GAB) (postinjection trial at 3 min after the bilateral delivery). ABD, abdominal muscles; BP, arterial blood pressure; DIA, diaphragm; EP, esophageal pressure; ∫, integrated EMG; L, the left side (ipsilateral to DLH microinjection is shown); PS, parasternal muscles.